Manufacturing device of low-temperature swing check valve

Abstract

The utility model relates to a low-temperature swing check valve manufacturing device which comprises a bottom plate frame, extension plates are arranged on the two sides of the bottom plate frame, a sliding plate is arranged at the bottom end of the bottom plate frame in a sliding mode, and a motor fixing frame is arranged on the top side of the sliding plate. The utility model relates to the technical field of swing check valves. According to the manufacturing device of the low-temperature swing type check valve, the first mold inner core and the second mold inner core are connected with each other and form a whole in the forming cavity, molten metal materials are injected into the forming cavity, gaps in the forming cavity are filled with the metal materials, mold casting is completed, and during demolding, the metal materials are poured into the forming cavity, so that the forming cavity is formed. The second mold inner core moves upwards to be separated from the product, then the hydraulic telescopic rod is started, the two outer mold frames are separated from each other, then the product is manually pulled out of the outer wall of the first mold inner core, demolding is completed, the mold can be repeatedly used, and the production efficiency during batch production can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of swing check valve technology, and in particular to a manufacturing apparatus for a cryogenic swing check valve. Background Technology

[0002] A check valve consists of a valve body, a check plate, a sealing ring, and a spring. The most important component, the valve body, is mainly made by casting.

[0003] Furthermore, valve seats are typically cast using sand casting during the casting process. However, once the valve seat is manufactured, the molding sand used is generally difficult to reuse, resulting in low casting capacity during mass production.

[0004] Furthermore, in sand casting, air is generally only vented through the mold during the casting process. However, due to the high density of molten metal, some air cannot easily pass through the molten iron, which can easily form a large number of air bubbles on the inner wall of the valve seat. Although some surfaces may appear to be in good condition, once processed, internal sand holes, air holes, and shrinkage cavities will appear, seriously affecting the quality of the cast steel parts. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a manufacturing device for a cryogenic swing check valve, so as to solve the technical problems mentioned in the background art.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0007] A manufacturing apparatus for a low-temperature swing check valve includes a base frame, extension plates on both sides of the base frame, a sliding plate slidably disposed at the bottom end of the base frame, a motor mounting bracket disposed on the top side of the sliding plate, a drive motor disposed inside the motor mounting bracket, a connector disposed at the motor shaft of the drive motor, and a first mold core disposed at the end of the connector away from the motor shaft of the drive motor.

[0008] Several hydraulic telescopic rods are provided on one side of each of the two extension plates. The telescopic ends of the hydraulic telescopic rods are provided with outer mold frames. The outer mold frames on both sides are arranged opposite each other. An extension push plate is provided at the top of each extension plate. An electric clamping plate is provided on the side wall of the extension push plate. The second mold core is connected between the two electric clamping plates.

[0009] Furthermore, the outer mold frame includes a valve seat portion and a valve cover portion, the valve seat portion and the valve cover portion are fixedly connected and have a valve body cavity opened inside them, one end of the valve seat portion is provided with a sealing plate, the side wall of the valve seat portion is threadedly connected with a fixing plate, and the fixing plate is fixedly connected to the telescopic end of the hydraulic telescopic rod.

[0010] Furthermore, the connector includes a strip plate, which is fixedly connected to the motor shaft of the drive motor. A connecting frame is provided on the outer peripheral wall of the strip plate, and a sliding rail is provided inside the connecting frame. The strip plate is inserted into the sliding rail, and the strip plate and the connecting frame slide together.

[0011] Furthermore, the first mold core includes a first insert tube, which is rotatably connected to the connecting frame. A sealing baffle is fixedly provided on the outer peripheral wall of the first insert tube at a position corresponding to the side wall of the valve seat. The diameter of the sealing baffle is larger than the diameter of the valve seat. A positioning hole is provided on the outer peripheral wall of the first insert tube at a position corresponding to the valve cover.

[0012] Furthermore, an adjusting motor is provided at the top of the connecting frame, and an adjusting screw is provided at the bottom of the adjusting motor. The adjusting screw passes through the strip plate and is threadedly engaged with the strip plate.

[0013] Furthermore, the second mold core includes a second insert tube, and a clamping plate is provided at the top of the outer peripheral wall of the second insert tube. The clamping plate cooperates with the electric clamping plate. The top of the clamping plate is provided with a pouring hole and a venting hole. The bottom end of the second insert rod is arc-shaped and cooperates with the outer peripheral wall of the first insert tube. The bottom end of the second insert tube is provided with a positioning rod that cooperates with the positioning hole.

[0014] Furthermore, the side wall of the fixed plate is provided with a positioning plate, which is slidably connected to the fixed plate through an electric slider and a guide groove.

[0015] Furthermore, an adjustment motor is provided at the bottom end of the base plate frame corresponding to the position of the sliding plate. The motor shaft of the adjustment motor is fixedly provided with a transmission screw. The bottom end of the sliding plate is provided with a transmission screw hole, and the transmission screw hole is threadedly engaged with the transmission screw.

[0016] According to another aspect of the present invention, a method for manufacturing a cryogenic swing check valve is provided, which is used in the manufacturing apparatus for the aforementioned cryogenic swing check valve.

[0017] The manufacturing method of this cryogenic swing check valve includes the following steps:

[0018] S101, Mold installation: Install the two outer mold frames on the telescopic ends of the hydraulic telescopic rods on both sides respectively, and keep one end of the closed plate away from the drive motor. Then install the first mold inner core on the motor shaft of the drive motor through the connector. Then clamp and fix the second mold inner core through the electric clamps on both sides.

[0019] S102, the mold is closed, the hydraulic telescopic rods on both sides are activated to close the two outer mold frames together, so that the inside of the outer mold frames forms a molding cavity. Then, by adjusting the settings of the motor and the transmission screw, the sliding plate is pushed to move, so that the first mold core is inserted into the inside of the molding cavity. Then, by moving the extension push plate, the electric clamping plate is controlled to move downward, so that the second mold core and the outer peripheral wall of the first mold core fit together.

[0020] S103, casting: molten metal material is poured into the molding cavity through the pouring hole until some metal material overflows from the vent hole. Then, the drive motor and connecting parts cause the inner core of the first mold to swing, causing the metal material inside the molding mold to fluctuate. After the first mold swings for a period of time, the swinging stops.

[0021] S104, Positioning: Slide the positioning plates to the side wall of the first mold core and push the first mold core to a position coaxial with the valve seat.

[0022] S105, Cool, wait for the mold to cool completely;

[0023] S106, Demolding: First, by moving the extension push plate, the electric clamping plate is controlled to move upward, causing the inner core of the second mold to move upward and separate the inner core of the second mold from the product. Then, the hydraulic telescopic rods on both sides are activated to separate the two outer mold frames from each other. At this time, the product is fitted onto the outer wall of the inner core of the first mold. Then, the mold is pulled out from the outer wall of the inner core of the first mold to complete the demolding.

[0024] In summary, this utility model has at least one of the following beneficial technical effects:

[0025] 1. A manufacturing device for a low-temperature swing check valve, wherein the inner core of the first mold and the inner core of the second mold are connected to each other and form a whole inside the molding cavity. Molten metal material is injected into the molding cavity to fill the gaps inside the molding cavity, thus completing the molding. During demolding, the inner core of the second mold moves upward and separates from the product. Then, the hydraulic telescopic rod is activated to separate the two outer mold frames. Finally, the product is manually pulled out from the outer wall of the inner core of the first mold to complete the demolding. The mold can be reused, which can effectively improve the production efficiency during mass production.

[0026] 2. The manufacturing device for a low-temperature swing check valve uses an adjustable motor to control the rotation of the adjusting screw. When the adjusting screw rotates, the connecting frame shifts due to the cooperation of the strip plate. At this time, the connecting frame is not coaxial with the motor shaft of the drive motor. Therefore, when the drive motor rotates, the connecting frame will swing, which in turn drives the first insertion tube to swing synchronously, thereby achieving the effect of vibrating the inside of the molding cavity and effectively allowing the air inside the metal material to be fully discharged. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the manufacturing apparatus for a cryogenic swing check valve according to an embodiment of the present utility model.

[0029] Figure 2 This is a schematic diagram of the base plate frame of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present utility model.

[0030] Figure 3 This is a schematic diagram of the connecting parts of a manufacturing apparatus for a cryogenic swing check valve according to an embodiment of the present utility model.

[0031] Figure 4 This is a schematic diagram of the outer mold frame of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present utility model.

[0032] Figure 5 This is a schematic diagram of the internal structure of the outer mold frame of a manufacturing device for a low-temperature swing check valve according to an embodiment of the present utility model.

[0033] Figure 6 This is a schematic diagram of the structure of the first mold core and the second mold core of a manufacturing apparatus for a low-temperature swing check valve according to an embodiment of the present invention.

[0034] Figure 7 This invention relates to a manufacturing apparatus for a cryogenic swing check valve according to an embodiment of the present invention. Figure 1 Enlarged view of the structure at point A;

[0035] Figure 8 This is a schematic diagram of the structure of a low-temperature swing check valve, which is a manufacturing apparatus for a low-temperature swing check valve according to an embodiment of the present utility model.

[0036] Figure 9 This is a schematic plan view of the connecting component of a manufacturing apparatus for a cryogenic swing check valve according to an embodiment of the present invention.

[0037] In the diagram, 1. Base plate frame; 2. Extension plate; 3. Sliding plate; 4. Motor mounting bracket; 5. Drive motor; 6. Connecting piece; 61. Strip plate; 62. Connecting frame; 63. Sliding rail; 64. Adjusting motor; 65. Adjusting screw; 7. First mold core; 71. First insert; 72. Sealing baffle; 73. Positioning hole; 8. Hydraulic telescopic rod; 9. Outer mold frame; 91. Valve seat; 92. Valve cover; 93. Valve body cavity; 94. Sealing plate; 95. Fixing plate; 96. Positioning plate; 97. Electric slider; 98. Guide groove; 10. Extension push plate; 11. Electric clamping plate; 12. Second mold core; 121. Second insert; 122. Clamping plate; 123. Pour hole; 124. Vent hole; 125. Positioning rod; 13. Adjusting motor; 14. Transmission screw; 15. Transmission screw hole. Detailed Implementation

[0038] The present invention will be further described in detail below with reference to the accompanying drawings.

[0039] Example 1:

[0040] Reference Figure 1 - Figure 9 The present invention discloses a manufacturing device for a low-temperature swing check valve, comprising a base frame 1, extension plates 2 on both sides of the base frame 1, a sliding plate 3 slidably disposed at the bottom end of the base frame 1, a motor fixing frame 4 disposed on the top side of the sliding plate 3, a drive motor 5 disposed inside the motor fixing frame 4, a connecting piece 6 disposed at the motor shaft of the drive motor 5, and a first mold core 7 disposed at the end of the connecting piece 6 away from the motor shaft of the drive motor 5.

[0041] Several hydraulic telescopic rods 8 are provided on opposite sides of the two extension plates 2. The telescopic ends of the hydraulic telescopic rods 8 are provided with outer mold frames 9. The outer mold frames 9 on both sides are arranged opposite to each other. An extension push plate 10 is provided at the top of each extension plate 2. The extension push plate 10 includes a bottom sleeve. A lifting plate is slidably provided inside the bottom sleeve. A hydraulic pump is connected to the bottom end of the bottom sleeve to control the lifting plate to move up and down. An electric clamping plate 11 is provided on the side wall of the extension push plate 10. The electric clamping plate 11 includes a transverse plate. The transverse plate is fixedly connected to the side wall of the lifting plate. An electric telescopic joint is provided at the end of the transverse plate away from the lifting plate. An arc-shaped clamping groove that cooperates with the clamping plate 122 is provided at the end of the electric telescopic joint away from the transverse plate. The second mold core 12 is connected between the two electric clamping plates 11.

[0042] It also includes the body of a swing check valve, such as Figure 8 As shown, P is the body of the swing check valve, P1 is the valve cover 92 of the check valve, P2 is the valve seat 91 of the check valve, P3 is the valve plate of the check valve, and P4 is the rotating mounting part of the valve plate of the check valve.

[0043] In this embodiment, two outer mold frames 9 are respectively installed at the telescopic ends of the hydraulic telescopic rods 8 on both sides, and one end of the sealing plate 94 is far away from the drive motor 5. The extension and retraction of the liquid telescopic rods are controlled by an external hydraulic pump, so that the hydraulic telescopic rods 8 push the two outer mold frames 9 to move relative to each other, so that the two outer mold frames 9 close, and the valve body cavity 93 inside the outer mold frame 9 together form a molding cavity.

[0044] The first mold core 7 is then installed on the motor shaft of the drive motor 5 via the connector 6. The first mold core 7 is inserted into the molding cavity by the movement of the sliding plate 3.

[0045] Then, the second mold core 12 is clamped and fixed by the electric clamping plates 11 on both sides, and moves downward by the extension push plate 10, so that the second mold core 12 is inserted into the molding cavity. At this time, the first mold core 7 and the second mold core 12 are connected to each other and form a whole inside the molding cavity. Molten metal material is then injected into the molding cavity, such as... Figure 5 As shown, the metal material fills the gaps inside the molding cavity to complete the casting process;

[0046] The drive motor 5, in conjunction with the connector 6, causes the inner core 7 of the first mold to swing, which in turn causes the metal material inside the molding mold to fluctuate, allowing the air inside the metal material to be fully expelled. After the air is expelled, the metal material is allowed to cool and solidify, at which point the injection molding is complete.

[0047] After injection molding is completed, the electric clamping plate 11 is controlled to move upward by extending the push plate 10, so that the second mold core 12 moves upward and separates from the product. Then, the hydraulic telescopic rods 8 on both sides are activated to separate the two outer mold frames 9 from each other. At this time, the product is fitted on the outer wall of the first mold core 7. Then, the product is manually pulled out from the outer wall of the first mold core 7 to complete the demolding.

[0048] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, the outer mold frame 9 includes a valve seat portion 91 and a valve cover portion 92. The valve seat portion 91 and the valve cover portion 92 are fixedly connected and have a valve body cavity 93 opened inside them. A sealing plate 94 is provided at one end of the valve seat portion 91. A fixing plate 95 is threadedly connected to the side wall of the valve seat portion 91. The fixing plate 95 is fixedly connected to the telescopic end of the hydraulic telescopic rod.

[0049] In this embodiment, when the two outer mold frames 9 are in contact with each other, the valve seat 91, the valve cover 92 and the valve body cavity 93 together form a complete mold with a molding cavity inside, and the molding cavity has three openings. The sealing plate 94 is used to close one of the openings of the molding cavity, and the fixing plate 95 is used to fix the outer mold frame 9 to the telescopic end of the hydraulic telescopic rod 8.

[0050] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, the connector 6 includes a strip plate 61, which is fixedly connected to the motor shaft of the drive motor 5. A connecting frame 62 is provided on the outer peripheral wall of the strip plate 61, and a sliding rail 63 is provided inside the connecting frame 62. The strip plate 61 is inserted into the sliding rail 63, and the strip plate 61 and the connecting frame 62 are slidably engaged.

[0051] In this embodiment, the motor shaft of the drive motor 5 is connected to the connecting frame 62 by the setting of the strip plate 61 and the sliding rail 63. Since the strip plate 61 is strip-shaped and fixedly connected to the motor shaft of the drive motor 5, when the strip plate 61 is located at the center of the sliding rail 63, the motor shaft of the drive motor 5 is coaxial with the connecting frame 62. Therefore, when the drive motor 5 rotates, it can drive the connecting frame 62 to rotate.

[0052] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, the first mold core 7 includes a first insert tube 71, which is rotatably connected to the connecting frame 62. A sealing baffle 72 is fixedly provided on the outer peripheral wall of the first insert tube 71 at a position corresponding to the side wall of the valve seat 91. The diameter of the sealing baffle 72 is larger than the diameter of the valve seat 91. A positioning hole 73 is provided on the outer peripheral wall of the first insert tube 71 at a position corresponding to the valve cover 92.

[0053] In this embodiment, when the first insertion tube 71 is inserted into the molding cavity, the sealing baffle 72 closes the other opening of the molding cavity, and the sealing baffle 72 corresponds to the sealing plate 94. At this time, both openings at the bottom of the molding cavity are closed.

[0054] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, an adjusting motor 64 is provided at the top of the connecting frame 62, and an adjusting screw 65 is provided at the bottom of the adjusting motor 64. The adjusting screw 65 passes through the strip plate 61 and is threadedly engaged with the strip plate 61.

[0055] In this embodiment, the setting of motor 64 is adjusted to control the rotation of adjusting screw 65, such as... Figure 9 As shown, when the adjusting screw 65 rotates, the connecting frame 62 will shift due to the cooperation of the strip plate 61. At this time, the connecting frame 62 is not coaxial with the motor shaft of the drive motor 5. Therefore, when the drive motor 5 rotates, the connecting frame 62 will swing, which will drive the first insertion tube 71 to swing synchronously, thereby achieving the effect of vibrating the inside of the molding cavity, and thus effectively allowing the air inside the metal material to be fully discharged.

[0056] Furthermore, since the diameter of the sealing baffle 72 is larger than the internal diameter of the valve seat 91, the molding cavity can also be sealed when the first insertion tube 71 is vibrated, which can effectively prevent leakage from the molding cavity.

[0057] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, the second mold core 12 includes a second insert tube 121. A clamping plate 122 is provided at the top of the outer peripheral wall of the second insert tube 121. The clamping plate 122 cooperates with the electric clamping plate 11. The top of the clamping plate 122 is provided with a pouring hole 123 and a venting hole 124. The bottom end of the second insert rod is arc-shaped and cooperates with the outer peripheral wall of the first insert tube 71. The bottom end of the second insert tube 121 is provided with a positioning rod 125 that cooperates with the positioning hole 73.

[0058] In this embodiment, when the second insertion tube 121 is inserted into the molding cavity, the positioning rod 125 is inserted into the positioning hole 73, so that the second insertion tube 121 and the first insertion tube 71 are connected to each other. Thus, when the first insertion tube 71 deflects, it can drive the second insertion tube 121 to vibrate synchronously, thereby improving the exhaust efficiency.

[0059] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, a positioning plate 96 is provided on the side wall of the fixing plate 95. The positioning plate 96 is slidably connected to the fixing plate 95 through an electric slider 97 and a guide groove 98.

[0060] In this embodiment, the electric slider 97 and the guide groove 98 are used to slide the positioning plate 96 and the fixing plate 95. The electric slider 97 is controlled by an external power source to slide inside the guide groove 98, thereby controlling the movement of the positioning plate 96. After the air inside the metal material is completely discharged, the positioning slide plate moves synchronously towards the axis of the first insertion tube 71 under the control of the electric slider 97, so that the arc-shaped groove of the positioning slide plate comes into contact with the outer wall of the closed baffle 72. Since the diameter of the arc-shaped groove at the end of the positioning slide plate is equal to that of the outer peripheral wall of the closed baffle 72, and when the positioning slide plate moves to the end of the guide groove 98 near the valve seat 91, the arc-shaped groove and the valve seat 91 are coaxially arranged. Therefore, when the arc-shaped groove is in close contact with the outer wall of the closed baffle 72, the closed baffle 72 can be coaxially arranged with the valve seat 91.

[0061] In a further preferred embodiment of this utility model, such as Figure 1-9 As shown, an adjustment motor 13 is provided at the bottom end of the base frame 1, corresponding to the position of the sliding plate 3. The motor shaft of the adjustment motor 13 is fixedly provided with a transmission screw 14. The bottom end of the sliding plate 3 is provided with a transmission screw hole 15, and the transmission screw hole 15 is threadedly engaged with the transmission screw 14.

[0062] In this embodiment, by adjusting the settings of the motor 13, the transmission screw 14 and the transmission screw hole 15, the sliding plate 3 is moved to control the movement of the inner core 7 of the first mold.

[0063] Example 2:

[0064] According to another aspect of this utility model, a method for manufacturing a cryogenic swing check valve is provided.

[0065] The manufacturing method of this cryogenic swing check valve includes the following steps:

[0066] S101, mold installation: Install the two outer mold frames 9 on the telescopic ends of the hydraulic telescopic rods 8 on both sides respectively, and move one end of the closing plate 94 away from the drive motor 5. Then install the first mold inner core 7 on the motor shaft of the drive motor 5 through the connector 6. Then clamp and fix the second mold inner core 12 through the electric clamps 11 on both sides.

[0067] S102, the mold is closed, the hydraulic telescopic rods 8 on both sides are activated, so that the two outer mold frames 9 are closed to each other, so that the inner cavity of the outer mold frame 9 is formed. Then, by adjusting the setting of the motor 13 and the transmission screw 14, the sliding plate 3 is pushed to move, so that the first mold core 7 is inserted into the inner cavity. Then, by moving the extension push plate 10, the electric clamping plate 11 is controlled to move downward, so that the second mold core 12 is in contact with the outer peripheral wall of the first mold core 7.

[0068] S103, pouring: molten metal material is poured into the molding cavity through the pouring hole 123 until some metal material overflows from the vent hole 124. Then, the drive motor 5, in conjunction with the connecting piece 6, causes the inner core 7 of the first mold to swing, causing the metal material inside the molding mold to fluctuate. After the first mold swings for a period of time, the swinging stops.

[0069] S104, Positioning: Slide the positioning plates 96 to the side wall of the first mold core 7 respectively, and push the first mold core 7 to a position coaxial with the valve seat 91;

[0070] S105, Cool, wait for the mold to cool completely;

[0071] S106, demolding: First, by moving the extension push plate 10, the electric clamping plate 11 is controlled to move upward, so that the second mold core 12 moves upward and separates from the product. Then, the hydraulic telescopic rods 8 on both sides are activated to separate the two outer mold frames 9 from each other. At this time, the product is fitted on the outer wall of the first mold core 7. Then, the mold is pulled out from the outer wall of the first mold core 7 to complete the demolding.

[0072] The embodiments described herein are preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape, and principle of this utility model should be included within the scope of protection of this utility model.

Claims

1. A manufacturing apparatus of a cryogenic swing check valve, characterized by, Including the bottom plate frame (1), both sides of the bottom plate frame (1) are provided with extension plate (2), the bottom end of the bottom plate frame (1) is slidably provided with sliding plate (3), the top side of the sliding plate (3) is provided with motor fixing frame (4), the inside of the motor fixing frame (4) is provided with drive motor (5), the motor shaft of the drive motor (5) is provided with connecting piece (6), the end of the connecting piece (6) away from the motor shaft of the drive motor (5) is provided with first mold inner core (7); The opposite side of the two extension plates (2) is provided with a plurality of hydraulic telescopic rods (8), the telescopic end of the hydraulic telescopic rod (8) is provided with an outer mold frame (9), the outer mold frames (9) on both sides are oppositely arranged, the top end of the extension plate (2) is provided with an extension push plate (10), the side wall of the extension push plate (10) is provided with an electric clamping plate (11), the second mold inner core (12) is connected between the two electric clamping plates (11).

2. The manufacturing apparatus of a cryogenic swing check valve according to claim 1, wherein The outer mold frame (9) includes a valve seat portion (91) and a valve cover portion (92), the valve seat portion (91) and the valve cover portion (92) are fixedly connected and have a valve body cavity (93) formed therein, one end of the valve seat portion (91) is provided with a closing plate (94), and the side wall of the valve seat portion (91) is threadedly connected with a fixing plate (95), and the fixing plate (95) is fixedly connected with the telescopic end of the hydraulic telescopic rod (8).

3. The manufacturing apparatus of a cryogenic swing check valve according to claim 2, wherein The connecting piece (6) includes a strip-shaped plate (61), the strip-shaped plate (61) is fixedly connected with the motor shaft of the drive motor (5), the outer peripheral wall of the strip-shaped plate (61) is provided with a connecting frame (62), the connecting frame (62) is provided with a sliding rail (63) in the inside, and the strip-shaped plate (61) is inserted into the inside of the sliding rail (63), and the strip-shaped plate (61) is in sliding fit with the connecting frame (62).

4. The manufacturing apparatus of a cryogenic swing check valve according to claim 3, wherein The first mold inner core (7) includes a first insertion tube (71), the first insertion tube (71) is rotatably connected with the connecting frame (62), the outer peripheral wall of the first insertion tube (71) is fixedly provided with a closing baffle (72) at a position corresponding to the side wall of the valve seat portion (91), the diameter of the closing baffle (72) is greater than that of the valve seat portion (91), and the outer peripheral wall of the first insertion tube (71) is provided with a positioning hole (73) at a position corresponding to the valve cover portion (92).

5. The manufacturing apparatus of a cryogenic swing check valve according to claim 4, wherein The top end of the connecting frame (62) is provided with an adjusting motor (64), the bottom end of the adjusting motor (64) is provided with an adjusting screw (65), the adjusting screw (65) penetrates through the strip-shaped plate (61) and is in threaded fit with the strip-shaped plate (61).

6. The manufacturing apparatus of a cryogenic swing check valve according to claim 5, wherein The second mold inner core (12) includes a second insertion tube (121), the outer peripheral wall top end of the second insertion tube (121) is provided with a clamping plate (122), the clamping plate (122) is matched with the electric clamping plate (11), the top end of the clamping plate (122) is provided with a pouring hole (123) and an exhaust hole (124), the bottom end of the second insertion tube (121) is arc-shaped and matched with the outer peripheral wall of the first insertion tube (71), and the bottom end of the second insertion tube (121) is provided with a positioning rod (125) matched with the positioning hole (73).

7. The manufacturing apparatus of a cryogenic swing check valve according to claim 6, wherein The side wall of the fixed plate (95) is provided with a positioning plate (96) which is slidably connected with the fixed plate (95) through an electric sliding block (97) and a guide groove (98).

8. The manufacturing apparatus of a cryogenic swing check valve according to claim 7, wherein The bottom end of the bottom plate frame (1) is provided with an adjusting motor (13) at a position corresponding to the sliding plate (3), a transmission screw (14) is fixedly arranged on the motor shaft of the adjusting motor (13), the bottom end of the sliding plate (3) is provided with a transmission screw hole (15), and the transmission screw hole (15) is in threaded cooperation with the transmission screw (14).

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